Supporting structure for a chair

ABSTRACT

A supporting structure for a chair, the supporting structure is a seat, a back support or a headrest. A nylon mesh is fixed on the annular upper surface of an inwardly projecting flange of the frame, and then the plastic-injection-molded engaging layer is integrally formed on the exterior surface of the frame, enabling the mesh to be firmly fixed on the frame. The elasticity of the mesh provides a comfortable and adequate support for the user&#39;s buttocks, back and head, providing comfortable seating and preventing muscle soreness. Further, the heat caused by the user&#39;s body can be vented off via the apertures of the mesh, so that the user will feel cool when sitting on or leaning against the supporting structure.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a supporting structure for a chair, andmore particularly to a supporting structure for a chair that comprises aframe and a nylon mesh fixed on the frame. The elasticity of the meshprovides a comfortable and adequate support for the user's buttocks,back and head, providing comfortable seating and preventing musclesoreness. And the user will feel cool when sitting on or leaning againstthe supporting structure since the mesh is breathable.

2. Description of the Prior Art

A conventional chair 100 (as shown in FIG. 1) comprises a seat 102disposed on a leg 101, a back support 103 fixed at the rear side of theseat 102, and a headrest on the top of the back support 103. The seat102, the back support 103 and the headrest 104 serve to support user'sbuttocks, back and head. However, the seat 102, the back support 103 andthe headrest 104 are made of foam material and are too soft to provideadequate support, which is likely to cause muscle soreness. Further, thefoam material-made seat 102, the back support 103 and the headrest 104are not breathable, so the user will uncomfortable.

The present invention has arisen to mitigate and/or obviate theafore-described disadvantages.

SUMMARY OF THE INVENTION

The primary objective of the present invention is to provide asupporting structure for a chair, the support structure is a seat, aback support or a headrest. A nylon mesh is fixed on the annular flangeof the frame, and then the plastic-injection-molded annular engagingportion is integrally formed on the outer periphery of the frame,enabling the mesh to be firmly fixed on the frame. The elasticity of themesh provides a comfortable and adequate support for the user'sbuttocks, back and head, providing comfortable seating and preventingmuscle soreness. Further, the heat caused by the user's body can bevented off via the apertures of the mesh, so that the user will feelcool when sitting on or leaning against the supporting structure.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows a conventional supporting structure for a swivel chair;

FIG. 2 shows a supporting structure for a chair in accordance with thepresent invention;

FIG. 3 is an exploded view of showing the frame and the mesh of thesupporting structure for a chair in accordance with the presentinvention;

FIG. 4 is an enlarged view of a part of the mesh;

FIG. 5 is a cross sectional view of the frame and the mesh of thesupporting structure for a chair in accordance with the presentinvention; and

FIG. 6 is a cross sectional view of the supporting structure for a chairin accordance with the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The present invention will be more clear from the following descriptionwhen viewed together with the accompanying drawings, which show, forpurpose of illustrations only, the preferred embodiment in accordancewith the present invention.

Referring to FIGS. 2 and 3, a supporting structure 20 for a chair 10 inaccordance with the present invention is a seat 20A, a back support 20Bor a headrest 20C. The supporting structure 20 is provided with a frame21, an annular flange 22 formed on the inner periphery of the frame 21,and a nylon mesh 23 (as shown in FIG. 5) is fixed to the top of theannular flange 22. The mesh 23 is formed with a plurality of apertures24 (as shown FIG. 4). A plastic-injection-molded annular engagingportion 25 is integrally formed on the outer periphery of the frame 21and enables the mesh 23 to be firmly fixed on the frame 21, as shownFIG. 6.

When the user sits on or leans against the mesh 23, the elasticity andthe tension of the mesh 23 is used to absorb the impact force (or theload) caused by the user's buttocks, back and head, providingcomfortable seating. Further, the apertures 24 make the mesh 23breathable and the heat caused by the user's body can be vented off viathe apertures 24, providing a cooling effect.

Therefore, the present invention has the following advantages ascompared to the prior art:

The support structure 20 is a seat 20A, a back support 20B or a headrest20C. The nylon mesh 23 is fixed on the annular flange 22 of the frame21, and then the plastic-injection-molded annular engaging portion 25 isintegrally formed on the outer periphery of the frame 21, enabling themesh 23 to be firmly fixed on the frame 21. The elasticity of the mesh23 provides a comfortable and adequate support for the user's buttocks,back and head, providing comfortable seating and preventing musclesoreness. Further, the heat caused by the user's body can be vented offvia the apertures 24, so that the user will feel cool.

While we have shown and described various embodiments in accordance withthe present invention, it is clear to those skilled in the art thatfurther embodiments may be made without departing from the scope of thepresent invention.

1. A supporting structure for a chair comprising: a frame, forming an outer periphery of said supporting structure, having an inwardly projecting flange with an annular upper surface; a mesh fixed at an outer periphery thereof to said annular upper surface of said flange, a plurality of apertures being formed in the mesh; and an engaging layer, integrally formed on the mesh-covered upper annular surface and on an exterior surface of the frame, thereby firmly fixing the mesh to the frame.
 2. The supporting structure for a chair as claimed in claim 1, wherein the supporting structure is a seat.
 3. The supporting structure for a chair as claimed in claim 1, wherein the supporting structure is a back support.
 4. The supporting structure for a chair as claimed in claim 1, wherein the supporting structure is a headrest.
 5. The supporting structure for a chair as claimed in claim 1, wherein the mesh is made of nylon.
 6. The supporting structure for a chair as claimed in claim 1, wherein said engaging layer is an injection-molded plastic layer covering the mesh-covered upper annular surface and the exterior surface of the frame, thereby firmly fixing the mesh to the frame. 